Enclosure, Carricknahorna, Co. Donegal

The site occupies a strategic position, with the land dropping away sharply to the west and north-west into a waterlogged valley below. What remains today is a subcircular area roughly 20 metres east to west and 16.5 metres north to south, its boundaries marked by the faint remnants of what was once a substantial wall or earthen bank, now little more than a gentle, grass-covered rise in the pasture.

The enclosure's defensive circuit is broken by a single entrance on the south to south-south-east side, where a gap of four to five metres would have allowed access to the interior. Along the south-west to western edge, the boundary cleverly incorporates the natural topography, following the break of slope where the ridge falls away into the boggy valley. Time hasn't been entirely kind to the structure; at the north-west, a later field wall, itself now ruined, appears to have been built directly over the original ancient boundary.

This type of enclosure shares characteristics with the cashels that dot the Irish landscape, and indeed, another cashel lies just 240 metres to the east. These structures likely date from the early medieval period, when such enclosed farmsteads were common throughout Ireland, providing both protection for livestock and a defendable homestead for farming families. The choice of location, on well-drained limestone ground above the surrounding wetlands, speaks to the practical knowledge of those who built it centuries ago.